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Macros | Enumerations | Functions | Variables
Content-Encoding Header

The Content-Encoding header indicates what additional content codings have been applied to the entity-body. More...

Macros

#define MSG_CONTENT_ENCODING_INIT()
 Initializer for an msg_content_encoding_t structure.
 

Enumerations

enum  { msg_content_encoding_hash }
 

Functions

msg_content_encoding_tmsg_content_encoding_init (msg_content_encoding_t x[1])
 Initialize an msg_content_encoding_t structure.
 
int msg_is_content_encoding (msg_header_t const *header)
 Test if header object is an instance of msg_content_encoding_t.
 
msg_content_encoding_tmsg_content_encoding_dup (su_home_t *home, msg_content_encoding_t const *header)
 Duplicate (deep copy) msg_content_encoding_t.
 
msg_content_encoding_tmsg_content_encoding_copy (su_home_t *home, msg_content_encoding_t const *header)
 Copy an msg_content_encoding_t header structure.
 
msg_content_encoding_tmsg_content_encoding_make (su_home_t *home, char const *s)
 Make a header structure msg_content_encoding_t.
 
msg_content_encoding_tmsg_content_encoding_format (su_home_t *home, char const *fmt,...)))
 Make a Content-Encoding header from formatting result.
 

Variables

msg_parse_f msg_content_encoding_d
 Parse a Content-Encoding header.
 
msg_print_f msg_content_encoding_e
 Print a Content-Encoding header.
 
msg_hclass_t msg_content_encoding_class []
 Header class for Content-Encoding header.
 

Detailed Description

The Content-Encoding header indicates what additional content codings have been applied to the entity-body.

Its syntax is defined in [H14.11] and [S20.12] as follows:

Content-Encoding = ( "Content-Encoding" / "e" ) ":" 1#content-coding
content-coding = token

Macro Definition Documentation

◆ MSG_CONTENT_ENCODING_INIT

#define MSG_CONTENT_ENCODING_INIT ( )

Initializer for an msg_content_encoding_t structure.

A static msg_content_encoding_t structure must be initialized with the MSG_CONTENT_ENCODING_INIT() macro. For instance,

#define MSG_CONTENT_ENCODING_INIT()
Initializer for an msg_content_encoding_t structure.
Definition msg_mime_protos.h:1352
List header.
Definition msg_types.h:161

Enumeration Type Documentation

◆ anonymous enum

anonymous enum
Enumerator
msg_content_encoding_hash 

Hash of Content-Encoding header.

Function Documentation

◆ msg_content_encoding_copy()

msg_content_encoding_t * msg_content_encoding_copy ( su_home_t home,
msg_content_encoding_t const *  header 
)
inline

Copy an msg_content_encoding_t header structure.

The function msg_content_encoding_copy() copies a header structure header. If the header structure header contains a reference (header->h_next) to a list of headers, all the headers in that list are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header structure header.

Parameters
homememory home used to allocate new structure
headerpointer to the header structure to be duplicated

When copying, only the header structure and parameter lists attached to it are duplicated. The new header structure retains all the references to the strings within the old header, including the encoding of the old header, if present.

Example
content_encoding = msg_content_encoding_copy(home, msg->msg_content_encoding);
msg_content_encoding_t * msg_content_encoding_copy(su_home_t *home, msg_content_encoding_t const *header)
Copy an msg_content_encoding_t header structure.
Definition msg_mime_protos.h:1481
Returns
The function msg_content_encoding_copy() returns a pointer to newly copied header structure, or NULL upon an error.

◆ msg_content_encoding_dup()

msg_content_encoding_t * msg_content_encoding_dup ( su_home_t home,
msg_content_encoding_t const *  header 
)
inline

Duplicate (deep copy) msg_content_encoding_t.

The function msg_content_encoding_dup() duplicates a header structure header. If the header structure header contains a reference (header->x_next) to a list of headers, all the headers in the list are duplicated, too.

Parameters
homememory home used to allocate new structure
headerheader structure to be duplicated

When duplicating, all parameter lists and non-constant strings attached to the header are copied, too. The function uses given memory home to allocate all the memory areas used to copy the header.

Example
content_encoding = msg_content_encoding_dup(home, msg->msg_content_encoding);
msg_content_encoding_t * msg_content_encoding_dup(su_home_t *home, msg_content_encoding_t const *header)
Duplicate (deep copy) msg_content_encoding_t.
Definition msg_mime_protos.h:1436
Returns
The function msg_content_encoding_dup() returns a pointer to the newly duplicated msg_content_encoding_t header structure, or NULL upon an error.

◆ msg_content_encoding_format()

msg_content_encoding_t * msg_content_encoding_format ( su_home_t home,
char const *  fmt,
  ... 
)
inline

Make a Content-Encoding header from formatting result.

The function msg_content_encoding_format() makes a new Content-Encoding header object using snprintf-formatted result as its value. The function first prints the arguments according to the format fmt specified. Then it allocates a new header structure, and uses the formatting result as the header value.

Parameters
homememory home used to allocate new header structure.
fmtstring used as a printf()-style format
...argument list for format
Note
This function may be implemented as a macro calling msg_header_format().
Returns
The function msg_content_encoding_format() returns a pointer to newly makes header structure, or NULL upon an error.

◆ msg_content_encoding_init()

msg_content_encoding_t * msg_content_encoding_init ( msg_content_encoding_t  x[1])
inline

Initialize an msg_content_encoding_t structure.

An msg_content_encoding_t structure can be initialized with the msg_content_encoding_init() function/macro. For instance,

msg_content_encoding_t msg_content_encoding;
msg_content_encoding_init(&msg_content_encoding);
msg_content_encoding_t * msg_content_encoding_init(msg_content_encoding_t x[1])
Initialize an msg_content_encoding_t structure.
Definition msg_mime_protos.h:1369
Parameters
xpointer to msg_content_encoding_t structure

◆ msg_content_encoding_make()

msg_content_encoding_t * msg_content_encoding_make ( su_home_t home,
char const *  s 
)
inline

Make a header structure msg_content_encoding_t.

The function msg_content_encoding_make() makes a new msg_content_encoding_t header structure. It allocates a new header structure, and decodes the string s as the value of the structure.

Parameters
homememory home used to allocate new header structure.
sstring to be decoded as value of the new header structure
Note
This function may be implemented as a macro calling msg_header_make().
Returns
The function msg_content_encoding_make() returns a pointer to newly maked msg_content_encoding_t header structure, or NULL upon an error.

◆ msg_is_content_encoding()

int msg_is_content_encoding ( msg_header_t const *  header)
inline

Test if header object is an instance of msg_content_encoding_t.

The function msg_is_content_encoding() returns true (nonzero) if the header class is an instance of Content-Encoding header object and false (zero) otherwise.

Parameters
headerpointer to the header structure to be tested
Returns
The function msg_is_content_encoding() returns true (nonzero) if the header object is an instance of header Content-Encoding header and false (zero) otherwise.

Variable Documentation

◆ msg_content_encoding_class

msg_hclass_t msg_content_encoding_class[]
extern

Header class for Content-Encoding header.

The header class msg_content_encoding_class defines how a Content-Encoding header header is parsed and printed. It also contains methods used by message parser and other functions to manipulate the msg_content_encoding_t header structure.


Sofia-SIP 1.12.11devel - Copyright (C) 2006 Nokia Corporation. All rights reserved. Licensed under the terms of the GNU Lesser General Public License.